138867353942 has 8 divisors (see below), whose sum is σ = 208354059000. Its totient is φ = 69416000944.

The previous prime is 138867353941. The next prime is 138867353951. The reversal of 138867353942 is 249353768831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138867353941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8828192 + ... + 8843907.

It is an arithmetic number, because the mean of its divisors is an integer number (26044257375).

Almost surely, 2^138867353942 is an apocalyptic number.

138867353942 is a deficient number, since it is larger than the sum of its proper divisors (69486705058).

138867353942 is a wasteful number, since it uses less digits than its factorization.

138867353942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17676030.

The product of its digits is 26127360, while the sum is 59.

The spelling of 138867353942 in words is "one hundred thirty-eight billion, eight hundred sixty-seven million, three hundred fifty-three thousand, nine hundred forty-two".